Solve the equation n+5=2n-1

A decreased by 20% and then increased by 20% express using algebra asapppppp

Ket [755]

Answer:

96%

Step-by-step explanation:

assume the whole number is x

the first thing is decreasing by 20 %

x - 20%x = 80% x

then now the 80%x is the whole number

now It's the turn of increasing

80%x + 20% * (80% x) = 80%x + 16%x = 96% x

I hope this is hlepful to you !!!!

Feel free to ask me in the comments

6 0

3 years ago

In what ways does adding a constant or coefficient to a quadrationc affect the graph

Roman55 [17]

Hope this helps 1) Equations with negative values for a produce graphs that open down and equations with a positive values for a produce graphs that open up.

2) As the absolute value of a gets larger our graphs become more narrow (they shoot towards positive or negative infinity faster). This is more interesting than it might appear. If you consider the second derivative of any quadratic it will be the a value. The second derivative represents acceleration, so the larger the a value the faster the increase of velocity and accordingly a quicker progression towards positive or negative infinity. Check this out in graphing calculator, press play to vary the value of a from -20 to 20. Notice that when the value of a approaches zero, the approximates a line, and of course when a is 0 we have the line y = 2x – 1.

3 0

4 years ago

A submarine cruised below the surface of the water. During a training exercise, it made 6 dives, each time descending 35 feet mo

Brut [27]

Answer:

68 feet

Step-by-step explanation:

A submarine cruised below the surface of the water

During training exercise, each time descending= 45 feet

Number of dives= 4

Total distance he descended= 45×4 feet

Total distance he descended= 180 feet

Then, it rose by= 112 feet

Now , the distance he is at below the surface if water= 180- 112

The distance he is at below the surface if water= 68 feet

Now, he is at 68 feet below the surface of the Earth

Hence, the correct answer is 68 feet

Step-by-step explanation:

3 0

4 years ago

A state's recidivism rate is 17%. This means about 17% of released prisoners end up back in prison (within three years). Su

Bezzdna [24]

Answer:

a) 2.9%

b) Option B is correct.

The prisoners must be independent with regard to recidivism.

Step-by-step explanation:

Probability that one prisoner goes back to prison = 17% = 0.17

a) The probability that two prisoners released both go back to prison = 0.17 × 0.17 = 0.0289 = 2.89% = 2.9% to 1 d.p

b) The only assumption taken during the calculation is that probability of one of the prisoners going back to prison has no effect whatsoever in the probability that another prisoner goes back to prison. That is the probability that theses two events occur are totally independent of each other.

If they weren't, we wouldn't be able to use 0.17 as the probability that the other prisoner goes back to prison too.

7 0

3 years ago

HELP 100 POINTS ASAP !!!!

bonufazy [111]

Answer:

3/2

Step-by-step explanation:

The composition of transformations has you dilate the line by a factor of 1/2, then by a factor of 3. Then the line is rotated about the origin.

The scale factor of the result will be the product of the dilation factors:

(3)(1/2) = 3/2

The scale factor of the transformation is 3/2.

7 0

3 years ago